The dataset consists of 4 aerial images in colour (Figures 2-5), scanned with 14 microns, the format is Tiled Tiff , each image is about 16500 x 16400 pixels, that means that storage of each image needs about 840 MB.

Due to the large image size only the cut-outs of the original images are made available. Four cut-outs are selected in the region with four-way overlap. We provide the cut-outs as TIFF format files and the pixel coordinates of their two corners relative to the original images.